tools/liblockdep: Build failure

[Eunbong Song <eunb.song@samsung.com>]

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There is tools/liblockdep build failure.
I have been trying to find the cause and i found commit id 63f9a7fde715352e0769302527670542a664b981 is the casue.

Author: Andi Kleen <ak@linux.intel.com>
Date:   Sat Feb 8 08:52:01 2014 +0100

    asmlinkage: Make lockdep_sys_exit asmlinkage

    lockdep_sys_exit can be called from assembler code, so make it
    asmlinkage.

    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Ingo Molnar <mingo@kernel.org>
    Signed-off-by: Andi Kleen <ak@linux.intel.com>
    Link: http://lkml.kernel.org/r/1391845930-28580-5-git-send-email-ak@linux.intel.com
    Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 92b1bfc..7df9aa6 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -265,7 +265,7 @@ extern void lockdep_info(void);
 extern void lockdep_reset(void);
 extern void lockdep_reset_lock(struct lockdep_map *lock);
 extern void lockdep_free_key_range(void *start, unsigned long size);
-extern void lockdep_sys_exit(void);
+extern asmlinkage void lockdep_sys_exit(void);

 extern void lockdep_off(void);
 extern void lockdep_on(void);
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index eb8a547..c8b6753 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -4191,7 +4191,7 @@ void debug_show_held_locks(struct task_struct *task)
 }
 EXPORT_SYMBOL_GPL(debug_show_held_locks);

-void lockdep_sys_exit(void)
+asmlinkage void lockdep_sys_exit(void)
 {
        struct task_struct *curr = current;
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